ailiealien
ailiealien
15-05-2016
Mathematics
contestada
how do you solve this?
Respuesta :
padawan
padawan
15-05-2016
1/sin^2 -1 = csc^2 -1 = cot^2
derive formula from formula
sin^2 + cos^2 = 1
divide both sides by sin^2
we got 1 + cot^2 = csc^2
or. csc^2 - 1 = cot^2 ... we use this
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